<template>
    <div>
        <el-upload class="avatar-uploader" action="#" :show-file-list="false" :on-success="handleAvatarSuccess"
            :before-upload="beforeAvatarUpload" :http-request="upload">
            <el-progress v-if="progress < 100 && progress > 0" type="circle" :percentage="progress"></el-progress>
            <img v-if="imageUrl" :src="imageUrl" class="avatar">
            <i v-show="!progress" v-else class="el-icon-plus avatar-uploader-icon" />
        </el-upload>
    </div>
</template>

<script>
// 下面的代码是固定写法
const COS = require('cos-js-sdk-v5')
// 填写自己腾讯云cos中的key和id (密钥)
const cos = new COS({
    SecretId: 'AKIDkNrIqJaeVCsX0IMCqHUTEoAICsMclhS1', // 身份识别ID
    SecretKey: 'PaXIp8D6kBONNRMCytoa8SZR6mT6Wjkl' // 身份秘钥
})
export default {
    data() {
        return {
            imageUrl: '',
            progress: 0
        }
    },
    methods: {
        upload(res) {
            // console.log(res)
            if (!res.file) return
            // 执行上传操作
            cos.putObject({
                Bucket: 'sxy-1363352974', /* 存储桶 */
                Region: 'ap-nanjing', /* 存储桶所在地域，必须字段 */
                Key: res.file.name, /* 文件名 */
                StorageClass: 'STANDARD', // 上传模式, 标准模式
                Body: res.file, // 上传文件对象
                onProgress: (progressData) => {
                    this.progress = parseInt(progressData.percent * 100)
                }

            }, (err, data) => {
                console.log('err', err)
                console.log('data', data)
                // 上传成功之后
                if (data.statusCode === 200) {
                    this.imageUrl = `https://${data.Location}`
                    this.$emit('upload', this.imageUrl)
                }
            })
        },
        handleAvatarSuccess(res, file) {
            this.imageUrl = URL.createObjectURL(file.raw)
        },
        beforeAvatarUpload(file) {
            const isImg = file.type === 'image/png' || file.type === 'image/jpeg'
            const isLt2M = file.size / 1024 / 1024 < 2
            if (!isImg) {
                this.$message.error('上传头像图片只能是 PNG 格式!')
            }
            if (!isLt2M) {
                this.$message.error('上传头像图片大小不能超过 2MB!')
            }
            return isImg && isLt2M
        }
    }
}
</script>

<style>
.avatar-uploader .el-upload {
    border: 1px dashed #d9d9d9;
    border-radius: 6px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.avatar-uploader .el-upload:hover {
    border-color: #409eff;
}

.avatar-uploader-icon {
    font-size: 28px;
    color: #8c939d;
    width: 178px;
    height: 178px;
    line-height: 178px;
    text-align: center;
}

.avatar {
    width: 178px;
    height: 178px;
    display: block;
}
</style>